Electromagnetic compatibility of optical fiber cables and key points for selection
Optical fiber cables, with their unique mode of optical signal transmission, have the inherent advantage of electromagnetic compatibility. Optical fiber transmission utilizes the principle of total internal reflection of light to transmit optical signals within the core layer of the optical fiber, while the insulating material and sheath covering the outer layer provide excellent electromagnetic shielding effect.
Advantages of electromagnetic compatibility:
Strong anti-electromagnetic interference capability: Optical fiber transmission is not affected by external electromagnetic fields and can operate stably in a strong electromagnetic environment, ensuring the integrity and reliability of the signal.
No electromagnetic radiation: During the optical fiber transmission process, no electromagnetic radiation is generated, thus not causing electromagnetic pollution to the surrounding environment and meeting the requirements of electromagnetic compatibility.
When choosing optical fiber cables, in addition to considering electromagnetic compatibility, the following aspects also need to be paid attention to:
Optical fiber type and core number:
Single-mode optical fibers and multi-mode optical fibers: Single-mode optical fibers are suitable for long-distance and high-bandwidth communication requirements, while multi-mode optical fibers are suitable for short-distance and low-cost communication scenarios.
Core number selection: Choose the appropriate core number based on actual needs, such as 4 cores, 8 cores, 12 cores, etc., to meet different communication capacity requirements.
Optical fiber performance parameters:
Attenuation coefficient: An indicator for measuring the loss during the transmission of optical fiber signals. The smaller the attenuation coefficient, the farther the signal transmission distance.
Bandwidth: The difference between the highest and lowest frequencies that an optical fiber can transmit. The greater the bandwidth, the greater the transmission capacity.
Dispersion: When optical signals are transmitted in optical fibers, it is a phenomenon of signal distortion caused by the different propagation speeds of optical signals of different wavelengths. Optical fibers with low dispersion should be selected.
Optical cable structure and sheath materials:
Optical cable structure: Common types include central bundle tube type, stranded type, etc. The appropriate structure should be selected based on the laying environment and requirements.
Sheath material: It should have good insulation performance, corrosion resistance and mechanical strength to protect the optical fiber from external damage.
Manufacturer and Qualifications:
Choose well-known brands: Well-known brands usually have stricter quality control systems and more complete after-sales services.
Check the qualification certificates: such as ISO9001 Quality Management System certification, ROHS environmental protection certification, etc., to ensure that the product quality meets relevant standards.
Price and cost performance:
Compare prices: The prices of optical fiber cables from different brands and models may vary. You should choose the appropriate product based on your budget and needs.
Consider the cost performance: When the prices are similar, one should choose a product with better performance and more reliable quality.
After-sales service
Technical support: Find out whether the manufacturer provides technical support and solutions so that problems can be solved in a timely manner when they occur during use.
Warranty Policy: Check the warranty period and scope of the product to ensure that you can enjoy comprehensive services within the warranty period.
